Question

State and explain newton's law of gravitation establus relation between g and G

Answer 1

Answer:

Explanation:

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.

G = 6.67300 × 10-11 N/m^2.kg^-2. G is a constant throughout space and time.

g = 9.8 m/s^-2.   g is a variable quantity.

G is a scalar quantity whereas g is a vector quantity.  

 

(According to Newton's law of universal gravitation the force of attraction between two bodies is given by F = GMm/r^2, where the symbols stand for their usual well known meanings. Also the weight of a body of mass m is F = mg.

So mg = GMm/r^2,  

or g = GM/r^2

g is a constant at a given location, which depends upon M and r.